Attachment for tenoning machines



April 9, 1929.

C. P. BIRD ATTACHMENT FOR TENONING MACHINES Filed Aug. 22, 1927 4 Sheets-Sheet l ATTORNEY@ April 9, 1929?- p, BIRD 1,708,601

ATTACHMENT FOR TENONING MACHINES Filed Aug. 22, 1927 A 4 Sheets-Sheet 2 funnier CL ARE/vee fl? /RD April 9, 1929.

c. P. BIRD s 1,708,601 ATTACHMENT FOR TENONING imcnrnss Filed Aug. 22, 1927 4 sheets-sheet 3 w N. m 0

n E *D w k m W n. [l: u.: o U3' lq Qx'r' l() l\ 1* @l u CZAEENCE P//eo 5M, Y/i @uw fnl/en for April 9, 1929. C, P, Bm 1,708,601

ATTACHMENT FOR TENONING NACHINES Filed Aug. 22, 1927 4 Sheets-Sheet 4 TroeNss/s Patented Apr. 9, 1929.

1,708,601 PATENT OFFICE.

CLARENCE P. BIRD, F BAYPORT, MINNESOTA, ASSIGNOR TO ANDERSEN LUMBER COM- PANY, 0F BAYPQRT, MINNESOTA, A CORPORATION OF WISCONSIN.

ATTACHMENT FOR TENONING MACHINES.

Application led August 22J 1927. Serial No. 21sl,653.y

Y In the manufacture of window and door sills, it has been customary to feedthem through a machine for cutting tenons in the ends of the sills to receive the upright por-A tion of the frame when the sill and frame are assembled. These sills are usually provided with longitudinal shoulders at the inner and longitudinal edges on the upper -side and after the sills have been passed through the tenoning machine, it has been customary to move them to another machine and l feed them through by hand to cut what is known as gains at each end of the inner shoulders of the sill. Thus considerable time and labor is required to move the sills Yafter the tenoning operation to another machine and the services of an attendant are necessary for feedingthe sills during the gaining operation. Y The object therefore of my invention is to provide an attachment for a tenoning machine so Vthat when the sills have passed through this machine andthe desired tenons are cutv therein, they will automatically be delivered to the attachment adapted for performing the gaining operation so that the labor of moving and manually feeding the sills intermediate the two operations is entirely eliminated. A further object is to provide a gaining attachment of such construction that when the sills are fed from their normal edgewise position in the tenoning machine they 'will Ybe delivered automatically in a horizontal position for the gaining operation. y

Other objects of the invention will appear from the Jfollowing detailed description.

VIn the accompanying drawings forming part of this specification,

Figure 1 is a sectional view on the line 1-1 of Figure 2 showing also the tenoning machine in vertical section;

Figure 2 is a plan view of the gaining attachment for the tenoning machine;

Figure 3 is a sectional'view on the line 3 3 of Figure 2; Y

Figure 4 is a side elevation of the gaining attachment forthe tenoning machine;

Figure 5 is a sectional view on the line 5-5 of Figure 2; Y

VFigure 6 is'a sectional view onpthe Aline 6--6 of Figure 5; A

Figure 7 is a perspective view of the end of Vthe sill after the ltenon `has been cut therein; and Y Y Y vis inserted; a presser belt 8 is mountedin a suitable frame 9 above the sills on each side of the machine, and is adapted to bear upon and hold the sills firmly between the jaws 6 during the operation of cutting the tenons. The presser belts are adjustable vertically by the operating mechanism 10 which need not be illustrated or described in detail as the machine is of standard construct-ion. Horizontally arranged saws 11 are provided at each end of the sills for cutting the horizontal or longitudinal saw cuts to form the tenons, these saws being driven from suitable motors 12; saws 13 arranged in vertical planes are positioned to form the vertical cuts in the ends of the sills and complete the tenoning operation, all as now performed with machines of this character in general use. Y

After the sillshave been cut to form the 'tenons 52 they are discharged automatically from between the jaws upon an incline la and slide downward thereover upon a horizontally arranged conveyer 15 having lugs 16 thereon at intervals which engage the sills horizontally lying thereon and feed them forwardly to the gain cutting saws. A shaft 17 has a driving connection 53 shownV in dotted lines in Figure 1 with the shaft of the tenoning machine to be operated sychronously therewith and sprocket wheels 18 are mounted on the shaft 17 to engage the eonveyer 15 and similar sprockets 19 are mounted in blocks 2O that are supported on standards 21 adjacent the discharge end of the tenoning machine. The blocks are adjustable by means of set screws 22 so that the tension of the conveyer can be increased or decreased as desired. The standards 21 are adapted to slide on a rail 23 that is supported by legs 24. By this means the conveyer is adapted for sills of different lengths. Standards 25 support the shaft 17 and the outer portions of the gaining machine and the right hand standard, as viewed in Figure 1, is transversely movable lon the base 26 b y means of therack 27 on the base;` shaft 28 geared to said rack and toa horizontal shaft 29 which is geared at 3,0 to the operating crank 3 1. The attendant byv manipulating this crank `can versely in guides 33 by means of adjusting screws 34. Frames 35 yare vertically adjustable vin guides 36 on the brackets 32 by meansV of adjusting screws and` motors Y32? are carried 'by' these frames and lhave arborsV 39'on` which saws 40 are mounted forcutting. the gains v7a in the shoulders 7b at' the ends-of the sills, these saws Oper- 'ating in vvertical planes` and engaging the sills at a predetermined point in their'travel through the machine as indicated in Figure V1. Onions side of the machine a stop 41 n isprovided and 'on the other side I' providea lflat tension spring 42 which engages the ends of the sills and force their `opposite ends against the stop 41 with a yielding pressure. 'This spring is mounted on a bracket 43 thatis adjustable by means of la" slide and set screw` 44 provided 4on the standard 25. 'Y y j I preferv alsoy to provide a vpresser foot 45 upon "each'side of the machine beneath which the sills are moved by the conveyer. Each presser footy is preferably provided i. with upwardly projecting rods 46 slidable in a liXed plate/i7 and normally held downwardly by the tension of compression springs 48.

The plates V47 are mounted upon brackets 49v which are adjustable by means of adjusting screws 50 for the purpose 'of raising or lowering each presser foot to 'increase or decrease its tension on the sill 'n beneath and the brackets 49 are adjustable transversely by means'of guides51 so that Athe position of each presser foot'may be changedy to adapt it for thev different lengths of sills.` .The saws 40"for cutting the gains` j in the sills are mounted4 in brackets 35 which i are adjustable transversely with the brackets 49 and have a vertical adjustment by means Y ofadjusting screws 37 so that the vsaws may be raised or lowered as desiredI to accommo- :date the thickness of thel sill -.and the desired y depth ,of the gain therein:A Y Provision is also made for regulating th f height of the table at the top of the standard by means of slots and adjusting` screws 55.

A suitable brace 56 is provided between the standard 25 and the bracket 21'at one side of the machine for holding the parts in their proper relative positionin the operation of the machine. i

YTo perform the tenoning and gaining operation the sills are placed manually begainingv machine. Y

tween the jaws on the conveyer Abelt of the v. lWhen this'is `completed the sills pass from under the presser' belts and slowly turn from an upright to an inclined position and are discharged by .gravity upon the slide v14 leading toithe gaining attachment. As the sills pass `down' lover the slide `they are engaged by the upwardly projecting lugs ofthe conveyer 15 and fed forwardiin a horizontal or flatwise position to the gaining saws, 'Ihese saws'have previously been adjusted to accommodate the length of the sills and the depth of the gaining cut andas the'sills approach the saws they will beengaged by a presser foot at' each end and by the spring `tension vdevice and held firmly so that when 'the YVsaws engagethe sills the gaining operation will be performed smoothly and quickly and without splintering'or in other ways damaging the upper surface of the sill; As the sills pass the gaining saws they may be discharged into a suitablereceptacle or in a pile, the work of tenoning and gaining havingbeen easily and quickly performed without the loss of time and manual labor usually required for moving the sills from the tenoning machinef'and feeding them through the In various ways the detailed construction herein shown may be modified and still'be within the scope ofimyV inventiom I 'claim as my invention: Y 5

1. The combination with a tenoning machine having a conveyer provided withjaws thereon'at-intervals adapted to receive sills placed'edgewisetherein, and saws for cutting theends ofV saidlsills transversely and longitudinally to form-tenons thereon, of a conveyerY arranged adjacent the discharge of the tenoning machine,*means adapted to receive the sills after the tenoning operation anddeliver them horizontally to said-conveyer, means for gripping the sills, and saws adapted to cut gains in the upper surfaces of the sills at the ends thereof.

2. Thev combination with a tenoning machine, having means for feeding sills therethrough and holding them edgewise during the feeding movement, and means for making longitudinal and transverse cuts in the ing window ordoor sills, the sills beingsup-f ported in an edgewise upright position, means for cutting the ends of the sills horizontally and longitudinally to form tenons thereon, means for receiving the sills delivered fiatWise by said feeding means and advancing the sills horizontally, means for gripping the sills to hold them firmly during such advancing movement and means for cutting transverse gains in the ends of the shoulders at one longitudinal edge of the sills.

4'. The combination, With a tenoning machine' having a conveyer provided With means adapted to receive and hold the Work placed edgeWise therein, and means for forming .tenons in the Work, of a conveyer arranged adjacent the discharge of the tenoning machine, means adapted toreceive the Work after the tenoning operation and deliver it horizontally to said conveyer, means for holding the horizontally delivered Work and means for forming gains in the surface of the Work.

5. The combinationwith means for feeding the Work supported in an edgewise upright position, means for cutting the ends of the Work horizontally and longitudinally to form tenons thereon, means for receiving the Work delivered iatvvise by said feeding means and advancing it horizontally, means for holding the Work during such advancing movement and means for cutting transverse gains in the Work adjacent a longitudinal edge.

In Witness whereof, I have hereunto set my hand this 11th day of August, 1927.

CLARENCE P. BIRD. 

